baber/WOPTO huggingface dataset:
Patent GB-1018801-A (GB)
Title: Process for the manufacture of diazines
IPC: C07D241/44
Filed: 1962-12-11
Abstract: The invention comprises (1) compounds of general formula <FORM:1018801/C2/1> wherein Y is tertiary amino and R1 is hydrogen or aryl, and their acid addition salts, and the specific compounds 2-hydroxy-3-morpholinoquinoxaline, 1 - benzyl - 2 - oxo - 3 - morpholino - 6 - methyl - 1 : 2 - dihydroquinoxaline, 2 - hydroxy - 3 - (N - methylpiperazino) - quinoxaline, and 1 - phenyl - 5 - morpholino - 6 - hydroxypyrazolo - [3 : 4 - b] - pyrazine, (2) process for compounds of general formula <FORM:1018801/C2/2> or tautomers, wherein Y is amino which may be substituted, R0 represents hydrogen or hydrocarbon which may be substituted, and <FORM:1018801/C2/3> represents an optionally substituted carbocyclic or heterocyclic ring, and acid addition salts thereof, in which in a compound <FORM:1018801/C2/4> the group A is converted into or replaced by a free amino group in the absence of an acidic or basic condensing agent by a known method, and in the intermediate (III, A=NH2) the dizine ring is formed by intramolecular condensation in the absence of an acidic or basic condensing agent.  Compounds III (in examples A is nitro and p-chlorophenylazo) may be prepared by treating compounds <FORM:1018801/C2/5> wherein X1, X2 are free etherified or esterified hydroxyl groups or halogen or are jointly oxo, with sulphur in the presence of ammonia or an amine.  o - Dichloroacetylamino - nitrobenzene is prepared from the amine and acid chloride: N-benzyl - N - dichloroacetyl - 2 - nitro - 4 - methylaniline and 2 - phenyl - 3 - dichloro - acetylamino 4 - p - chlorophenylazopyrazole are obtained similarly.  Pharmaceutical compositions comprise compounds of the invention with excipients. Forms (tablets, dragees, capsules, solutions, suspensions and emulsions) for oral and parenteral administration are mentioned, and veterinary use with feedstuffs.  The compounds have diuretic and sodium-secreting properties.
Patent GB-1207428-A (GB)
Title: Transistorised power amplifier
Inventor: ROTHE HORST
IPC: H03F3/24
Filed: 1968-10-03
Abstract: 1,207,428. Transistor amplifying circuits. H. ROTHE. 3 Oct., 1968 [4 Oct., 1967], No. 46940/68. Heading H3T. A transistor power amplifier is characterized in that it is driven, between the external base and emitter connections with an A.C. voltage the waveform of which differs from that appearing directly across the emitter-base depletion layer, in such a manner that the output current has the desired waveform despite the voltage drops across the impedances between the emitter and base connections and the emitter-base junction. The arrangement permits of increased efficiency in high frequency class B and C amplifiers at frequencies above the normal cut-off frequency of the transistor. In one embodiment a transistor operating in class B into a circuit tuned to frequency w, Fig. 7, is driven from a preceding stage with the frequency 2w in addition to the drive at frequency w, so as to produce a peak in the drive in the conductive direction (Fig. 5, not shown). In another embodiment, the transistor is driven by a preamplifier V, Fig. 9 via a series impedance Z k , the base current through which produces a correcting voltage which is fed back in series with the sine wave input U 11  to the amplifier V. In a further embodiment, a correcting voltage is produced from the collector current of the transistor by means of one or more diodes, Fig. 10 connected in the emitter lead.
Patent GB-1103925-A (GB)
Title: Improvements relating to screw extruders
IPC: B29C48/50
Filed: 1965-11-05
Abstract: 1,103,925. Screw extruders. BARMER MASCHINENFABRIK A.G. 5 Nov., 1965 [6 Nov., 1964; 29 May, 1965], No. 47044/65. Heading B5A. A screw extruder is provided with a feed channel 2 which communicates both with screw 3 and a pocket 4 which runs axially of barrel 1 for a distance of at least one screw pitch and which tapers in the downstream direction. According to the invention, the pocket allows the creation of sufficient working pressure when the starting materials are plasticized, and particularly when of low viscosity, or when they are finely divided and of low density. Pocket 4 may taper both axially and transversely and typical cross-sections are shown, Figs. 2a, 2b, 2c (not reproduced). The extruder is provided with heaters 10-12, a heat insulant partition 13 and a cooling duct 14. The embodiment of Fig. 3 (not reproduced), is intended for use with powders, and the pocket may be parallel or skew to the barrel axis, Figs. 4a-4f (not shown), or asymmetric in cross-section, Fig. 3a (not shown). A stirrer may be incorporated in channel 2 or in a feed hopper.
Patent GB-1484187-A (GB)
Title: Process for controlling rheology of polypropylene
IPC: B29C48/08
Filed: 1974-10-31
Abstract: 1484187 Oxidative degradation of polypropylene EXXON RESEARCH & ENG CO 31 Oct 1974 [21 Nov 1973] 47151/74 Heading C3P Polypropylene having a shear stress above 22 and a die swell of 1-12 is oxidatively degraded in an extruder-reactor in which molten polymer is conveyed under shear through a feed zone, a mixing zone, a transition zone and a metering zone; wherein the temperature in the transition zone is 500-900 F., the metering zone is maintained at a temperature 50-400 F. lower than the transition zone, and a gas containing 15- 25 wt. per cent oxygen is injected into the metering zone under a pressure of 1200-5000 p.s.i.g. and at a rate of 500-5000 c.c. gas per pound of molten polymer.
Patent GB-1383006-A (GB)
Title: Process for the impregnating of leather or leather substitutes
IPC: C14C9/00
Filed: 1972-10-13
Abstract: 1383006 1 - (# - Aminoethyl) - Imidazolines HENKEL & CIE GmbH 13 Oct 1972 [15 Oct 1971] 47242/72 Addition to 1086039 Heading C2C [Also in Division D1] Compounds of the general formula wherein R 1  is hydrocarbon having more than 20 C atoms, R 2  is alkylene having 2 or 3 C atoms, m is 1, 2 or 3 and n is 2 or 3, are made by condensing carboxylic acids having more than 20 C atoms with polyalkylenepolyamines. In the examples, the acids used are erucic phenylstearic and montanic acids and oleic acid (comparative), and the amine used is diethylene triamine. The compounds are used to waterproof leather or leather substitutes in the form of salts of carboxylic acids having more than 20 C atoms, which may be the same as or different to the above-mentioned acids.
Patent GB-1242547-A (GB)
Title: Depot medicaments in capsule form
IPC: A61K9/48
Filed: 1968-10-07
Abstract: 1,242,547. Depot medicaments in capsule form. R. P. SCHERER, G.m.b.H. 7 Oct., 1968 [7 Oct., 1967], No. 47403/68. Heading A5B. A gelatin capsule (which may have been tanned with formalin) contains a depot medicament, comprising a solution or suspension (which is liquid or flowable at room temperature) of at least one physiologically active substance and at least one physiologically substance (which is also inert to gelatin) in a liquid vehicle, which is a liquid water-miscible substance and/or a liquid mixture of a waterimmiscible substance with a water-oil emulsifier or an auxiliary solvent, each physiologically inert substance forming a microporous spongy body when contacted with water or the juice of the gastro-intestinal tract. The physiologically inert substance(s) is insoluble or only gradually soluble in water or the juice of the gastro-intestinal tract, and may be a polyvinyl homopolymer or copolymer, a cellulose ether or shellac. Dicalcium phosphate may also be present. Numerous Examples are given.
Patent GB-1394952-A (GB)
Title: Piperidine derivatives and their use as polymer stabilizers
IPC: C08L77/00
Filed: 1973-10-11
Abstract: 1394952 Piperidine derivatives; borate ester SANKYO CO Ltd 11 Oct 1973 [20 Oct 1972] 47595/73 Headings C2B and C2C Novel piperidine derivatives of the formula wherein R<SP>1</SP> is hydrogen, optionally substituted alkyl, alkenyl, alkynyl, aralkyl, acyl, alkoxycarbonyl or aralkoxycarbonyl; R<SP>2</SP> is hydrogen, alkyl or phenyl, n is 1, 2, 3 or 4; and when n is 1, R<SP>3</SP> is hydrogen, alkyl, optionally substituted aralkyl, cycloalkyl, alkenyl, alkynyl, epoxyalkyl, aryl, or a group of the formula when n is 2, R<SP>3</SP> is alkylene, alkenylene, alkynylene, aralkylene, or a group of formula wherein R<SP>4</SP> is acyl, or a divalent metal atom; when n is 3, R<SP>3</SP> is alkanetriyl, aralkanetriyl or a trivalent metal atom (including boron); and when n is 4, R<SP>3</SP> is alkanetetrayl, aralkanetetrayl or a tetravalent metal atom, are prepared by reacting a compound of the formula with a compound of the formula in the presence of a basic catalyst, e.g. sodium methoxide, sodium ethoxide, potassium butoxide or sodium hydroxide. The novel compounds are useful as stabilizers for polymers.
Patent GB-1026697-A (GB)
Title: Improvements relating to electrical motor equipment
Inventor: FRITZSCHE WILFRIED
IPC: H02P23/00
Filed: 1962-12-18
Abstract: 1,026,697. Automatic speed control systems. LICENTIA PATENT-VERWALTUNGS-G. m. b. H. Dec.18, 1962, No. 47781/62. Addition to 963, 020. Heading G3R. The "proportional" digital regulator for multi-motor plant described in the parent Specification is modified to provide integral and derivative components in the control signal. Proportional signal is derived as in the parent, the gated pulse train representing the motor speed being fed to a counter 3, where a number of reference pulses from generator 4 are subtracted if the motor is to run above basic speed. The resulting count is transferred through a filter 8 to a main store 9, where the correct spped count is subtracted, leaving the speed error signal in store, to be passed to a digital/analogue converter 9a. Integral signal. When a set number of pulses has passed into counter 3 gate 12 is opened so that the remainder of-the-train representing the speed is passed to store 13 and added to the previous content to provide an accumulated (integrated) speed error signal, which is passed to a digital/analogue converter 13a. Derivative signal. Before the main store is - cleared at the end of each count, its content is-  passed-through a filter to a subsidiary store 18, and digital/analogue converter 18a, thus the speed error at the present and previous count can be compared at 20 to provide a first derivative signal. Alternatively Fig 2 (not shown) the previous speed error may be transferred from the main store 9 to a counter 21 and the present error count (supplied to store 13) is substracted-to-provide the first derivative. Either of these circuits may be repeated to provide a second derivative. The error, integral, and derivative signals are summed in an adder-circuit 10 to control the motor as described in the parent Specification.
Patent GB-1448284-A (GB)
Title: Agricultural implement
IPC: A01B73/04
Filed: 1973-10-15
Abstract: 1448284 Agricultural implement ORTHMAN MFG INC 15 Oct 1973 47964/73 Heading A1B An agricultural implement comprises a tool bar carrying ground working tools and having a hollow main frame 14, and wing sections 16 pivotal between raised and lowered positions by means of hinges 24, each hinge 24 consisting of a pin 36 engaging aligned apertures 34, 48 in ears 32 of the main frame 14 and ears 46 of the wing section 16, respectively, operation of the hinge 24 being by a hydraulic cylinder 50, one end 52 of which is detachably secured to the post 54 in the main frame 14, while the piston is pivotally connected by a pin 66 to an ear 68 of the wing section 16, the ear 68 extending into the main frame when in a lowered position. Lateral movement of the ear 68, when the wing section 16 is in a horizontal position, is limited by being received in the notch 75 in the base of the main frame 14.
Patent GB-1394839-A (GB)
Title: Ice making machines
IPC: F25C1/04
Filed: 1972-10-18
Abstract: 1394839 Ice-making KING-SEELEY THERMOS CO 18 Oct 1972 [18 Oct 1971] 48050/72 Heading F4H In an ice-making apparatus water is sprayed from a rotary spray bar 280 Fig. 5 upwardly into the lower open ends of inverted ice-forming moulds 242 Fig. 6 wherein during a freezing cycle it is frozen by tubing 234 of an evaporator (36) of a compression refrigeration system, which evaporator is supported within a tank 144 above the moulds which retains water in heat transfer relationship to the moulds to effect release of the ice therefrom during a harvest cycle by water heated in a tank 146 Fig. 16 by the refrigerants passing from the compressor to the condenser and passed by a line 168 to the tank 144. The tank 144 has drainage holes for allowing controlled flow of water into a lower sump 142 to cause dilution of make-up water by the thawing water for the next successive freezing cycle and an additional excess quantity of water passes to the sump before each cycle to reduce the accumulation of foreign material in the water system by passing to a drain 140. A pump 170 passes water from the sump to the rotatable spray bar, and a partition 258 is disposed between the bar and sump to receive the ice from the moulds and direct them via an opening 198 to a discharge shoot 268. A three-way valve 70 selectively operating in response to an electrically controlled system links the sump with the tank 144 during the freezing cycle or to the external drain 140 during the harvest cycle. An enclosure formed of a moulded synthetic polymeric material and including rigidifying means is described which enclosure nests the water and evaporator-holding tank 144 within its upper end, contains the moulds, spray bar, partition and defines the sump in its lower portion.
Patent GB-992763-A (GB)
Title: Comminuted fibrous meat product and texture control thereof
IPC: A22C11/02
Filed: 1962-12-28
Abstract: 992,763. Sausages. OSCAR MAYER-KARTRIDG PAK S.A. Dec. 28, 1962, No. 48815/62. Heading A2B. In making links of sausages or similar shaped meat products, wieners especially, at case stuffing speed less than the usual, the strength of the product for subsequent treatment and the texture of the ultimate product are maintained by orienting the fibres of the comminuted meat in a direction longitudinally of the link. With the device of the Figures, the meat emulsion is extruded from the mouth 12 of a nozzle 11 to expand into a casing 17 while passing over an annular arrangement of spaced parallel wires 14 extending from the nozzle 11. Specification 992,761 is referred to.
Patent GB-1141376-A (GB)
Title: Foamed resins production
Inventor: SEN DURGACHARAN
IPC: C08J9/12
Filed: 1966-11-01
Abstract: 1,141,376. Foaming thermoplastic resins. MONSANTO CHEMICALS Ltd. 20 Sept., 1967 [1 Nov., 1966], No. 48833/66. Headings C3C and C3P.  Thermoplastic resins are foamed by a process in which the heat-softened resin containing orthoboric acid as nucleating agent is mixed under pressure with a volatile blowing agent and extruded into a zone of lower pressure to allow foaming of the resin, the extrusion conditions being such that the orthoboric acid is thermally decomposed so as to provide nucleation sites for cell formation. Conventional nucleating agents, e.g. silica and talc, may also be present. The resin may be a polymer of ethylene, propylene, butadiene, styrene, vinyl toluene, α-methyl styrene, acrylonitrile, vinyl chloride, vinyl acetate, methyl acrylate, ethyl acrylate or methyl methacrylate The blowing agent may be an aliphatic hydrocarbon or halogenated hydrocarbon, acetone, carbon dioxide or nitrogen. Examples describe the preparation of foamed sheets of polyethylene, polystyrene and an ethylene/vinyl acetate.
Patent GB-1019316-A (GB)
Title: Bottle cap
IPC: B65D53/04
Filed: 1963-12-12
Abstract: 1,019,316. Bottle closures. A. ZAMORA. Dec. 12, 1963 [Aug. 28, 1963], No. 49147/63. Heading B8T. A liner 20, Fig. 1 (not shown), of plastics material secured to a bottle mouth by a crown cap 16 has a groove 21b to receive the mouth rim. A similar groove 21a is provided on the opposite face of the liner, and a part 23b of the latter extends into the bottle mouth. The central part of the liner which extends into the bottle mouth may be dome-shaped.
Patent GB-1365963-A (GB)
Title: Cots for rollers
IPC: D01H5/74
Filed: 1971-10-22
Abstract: 1365963 Rollers CARL FREUDENBERG 22 Oct 1971 [24 Oct 1970] 49252/71 Heading F2U [Also in Division B5] A cot or sleeve for a roller comprises a supporting tube 2 of metal or plastics with an outer layer 3 of rubber or other elastomer, and ribs 1 of rubber or elastomer in its bore to grip a smooth shaft. A method of moulding the cot is also described (see Division B5).
Patent GB-1465089-A (GB)
Title: Arrangement for radio or television controls employing  sensor electrodes
IPC: H03K17/96
Filed: 1974-11-19
Abstract: 1465089 Touch switches INTERNATIONAL STANDARD ELECTRIC CORP 19 Nov 1974 [23 Nov 1973] 50098/74 Heading G1N In a multi-electrode touch-switch having electrodes a, b, c, to be selectively "touch-bridged" to a common electrode d, touchable separatorstrip-electrodes e connected to a blocking potential prevent erroneous operation of two circuits simultaneously. An untouchable guard wire f just below the insulating surface is also connected to a blocking potential to screen the electrodes from leakage e.g. due to moisture. The blocking conductor system may also be used to protect circuit elements associated with the control panels from male-function due to humidity.
Patent GB-1484630-A (GB)
Title: Head mounted eye filters
IPC: G02C7/10
Filed: 1974-11-19
Abstract: 1484630 Eye shields STANDARD TELEPHONES & CABLES Ltd 19 Nov 1974 50099/74 Addition to 1451725 Heading G2J An eye shield comprises a pair of light attenuating, absorbing spectacle elements 11 mounted in a frame 12, 13, each element being concave towards the wearer's eyes, and each element has an insert 14 in the form of a multi-layer optical interference filter which is concave towards the wearer's eyes, the inserts 14 being mounted in the elements 11 so as to reflect images of the centres of the wearer's eyes back to his pupils. The inserts 14 may be of the type described in Parent Specification.
Patent GB-1131414-A (GB)
Title: Photographic silver halide emulsions
Inventor: HUMPLETT WILBERT JEPTHA
IPC: C07C59/105
Filed: 1965-11-25
Abstract: 1,131,414. D-Arabono-γ-lactone and isobutyl- D - arabonate tetra - acetate. EASTMAN KODAK CO. 25 Nov., 1965 [25 Nov., 1964; 19 Aug., 1965], No. 50111/65. Heading C2C. [Also in Division G2] D - arabono - γ - lactone is prepared by bubbling gaseous hydrogen chloride through a solution of potassium-D-arabonate in n-butyl alcohol. Isobutyl-D-arabonate tetra-acetate is prepared by reacting arabonyl chloride tetraacetate with isobutyl alcohol.
Patent GB-1121117-A (GB)
Title: Fluid gyrometer
Inventor: COLOMBANI DON PIERRE LOUIS JEA
IPC: G01C19/14
Filed: 1965-11-29
Abstract: 1,121,117. Gyroscopic apparatus. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D AVIATION. Nov. 29, 1965 [Dec. 4, 1964], No. 50631/65.' Heading G1C. [Also in Division G3] A gyrometer 1 for measurement of angular velocity about an axis x-x, Fig. 1, comprises means 12, 13 to establish radial fluid flow 2 into an annular conduit 15, two nozzles 3, 4, Fig. 2, rotated at the velocity to be measured and inclined at an angle in opposite directions relatively to two respective radii R3, R4 of the radial flow, and means for measuring the difference between the rates of flow into the two nozzles. The gyrometer 1 is fixedly mounted in an air, sea or space craft to be stabilized and the flow in the conduit 15 which does not pass into the nozzles 3, 4 is collected by an outlet 16 for recirculation to the inlet 12. Flow from nozzles is fed to the inlet branches 6, 7 of a fluid amplifier 8 to distribute fluid from a jet 9 between the outlets 10, 11 in the same ratio as the inputs from the nozzles. In a modified construction, fluid is fed into the conduit 15 through a rotor provided with radial or helical vanes and connected to a flywheel outside the gyrometer casing.
Patent GB-1208024-A (GB)
Title: Radiation sensitive materials
Inventor: SHERWOOD HAROLD FRANK
IPC: G01T5/10
Filed: 1967-11-09
Abstract: 1,208,024. Coated sheet material. EASTMAN KODAK CO. 9 Nov., 1967 [9 Nov., 1966], No. 50999/67. Heading B2E. [Also in Divisions H1, H5, G2 and G6] In preparing a detector for nuclear particles, radiation a support, e.g. polyethylene terephthalate 'is coated with photographic gelatin which may contain phenolphthalein indicator, and the gelatin layer coated with a layer of cellulose nitrate (nitro-cellulose). The gelatin coated support may be obtained by fixing an unexposed piece of photographic film and coating this with cellulose nitrate. In another embodiment the photographic film is first exposed and fixed before being coated with cellulose nitrate. The resultant coated material is used to detect and amplify nuclear particle radiation (Divisions H5 and G6) by etching the damage tracks and developing staining or bleaching the exposed gelatin layer.
Patent GB-1022306-A (GB)
Title: Improvements in or relating to bandpass filters
IPC: H04N5/44
Filed: 1963-12-30
Abstract: 1,022,306. Electrical filter networks; multiplex radio signalling. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Dec. 30, 1963 [Jan. 2, 1963], No. 51137/63. Headings H3U and H4L. A band-pass filter for passing a comparatively wide frequency range and also for suppressing a comparatively narrow frequency band adjacent to said wide range, comprises series branches I, II, each constituted by a seriesresonant circuit tuned to the mid-point of the wide range and a shunt branch comprising individual branches III, IV each comprising series-resonant circuits tuned to the narrow band, the branch IV being coupled across capacitor 35 forming part of branch III. The input signal which may bea television intermediate-frequency signal is applied to input terminals on the left and the output signal from which signals, e.g. sound carrier, within the comparatively narrow band have been suppressed appears across capacitor 21 which may be the input capacitance of a vision intermediate frequency amplifier valve, Fig. 3 (not shown). The corresponding sound carrier signal, i.e. the comparatively narrow frequency band, is developed across capacitor 41 which may be the input capacitance of the sound I.F. amplifier. To obtain the band-pass characteristics inductors 13, 23 and 33, 43 may be inductively coupled though this is not essential and in the preferred embodiment inductive coupling is not used. Resistor 40 serves as a neutralizing component to reduce the sharpness of the narrow frequency band.
Patent GB-1380098-A (GB)
Title: Plasma flame spraying
IPC: H05H1/36
Filed: 1972-11-07
Abstract: 1380098 Automatic control of plasma arc spraying METCO Inc 7 Nov 1972 [5 June 1972] 51193/72 Heading G3R Plasma flame spraying apparatus includes an arrangement for automatically controlling arc current and secondary plasma gas flow around the arc so that both increase and reach predetermined working values at approximately the same time. As shown, a plasma gun 19 receives primary plasma-forming gas and a cooling sheath of secondary gas at a flow-rate controlled by an accumulator in a valve module 17 which also supplies gas for carrying powder for spraying to the gun. The gas used may be nitrogen or argon. An arc is established by an ignition circuit including a high frequency generator 13, and a power supply circuit 11 includes a saturable winding controlled by transistors and an SCR. In closed loop operation, the arc current is held at a predetermined level for a given plasma gas flow, the current being sensed to produce a control signal which is fed through an amplifier to the firing circuit of the SCR. The current detector may be a shunt, a Hall effect device or a photo-cell arrangement. During start-up, the control signal is used to open a solenoid valve to increase the gas flow with the arc current. Line voltage fluctuations are compensated by a Zener diode circuit, Fig. 5 (not shown), and an overcurrent protection relay (270) is also included Fig. 10 (not shown).